Locomotive-boiler.



No. 690,:82. Patented nec. 3|, |901. .1. J. REGAN.

LOCOMOTWE BDILER.

(Application lsd June 6, 1901.)

(No Model.)

FIG.1.

W ys

Il States artnr FFIC JOHN J. REGAN, OF JERSEY CITY NEW JERSEY.

LOCOIVIOTIVE-BOILER.

SPECIFICATION forming bart of Letters Patent N0. 690,182, dated December 31, 1901.

Application filed June 6, 1901. Serial No. 63,377. (No model.)

To @ZZ whom it may concern:

Be it known that I, JOHN J. REGAN, a citizen of the United States, and a resident of Jersey City, in the county of lIudson and State of New Jersey, have invented a new and Improved Locomotive-Boiler,of which the following is a full, clear, and exact description.

The object of the invention is to provide a new and improved locomotive-boiler which is simple and durable in construction and an ranged to provide a large heating-surface and to insure complete combustion of the fuel, so that the boiler can be run with the greatest economy in the consumption of fuel and without danger of early'destruction of the parts of the boiler.

The invention consists of novel features and parts and combinations of the same, as will be fully described hereinafter and then pointed out in the claims.

A practical embodiment of the invention is represented in the accompanying drawings, forming a part of this specification, in which similar characters of reference indicate corresponding parts in all the views.

Figure l is a longitudinal sectional elevation of the improvement. Fig. 2 is an end view of the same. Fig. 3 is a transverse section of the same on the line 3 3 in Fig. l, and Fig. l is a similar view of the same on the line 4. t in Fig. l.

The improved locomotive-boiler consists, essentially, of an external shell Aand an internal shell I3, arranged eocentrically in the external shell and forming with the same a steam and water compartment C, leading to a steam-dome D, from which extends the usual supply-pipe E for carrying the generated steam to the engine. The internal shell B consists of a lire-box F, a first set of smokedues G extending through a water-compartment H, next to which is arranged an auxiliary combustion-chamber Lcontaining waterjacketedor tire-brick deflectors J J', and the forward end of the shell B is occupied by a secondsetofsmoke-flues K,eXtending through a water-chamber L. The chambers H and L are connected by openings H and L with the steam and water compartment C, so that Water freely circulates through said cham-4 bers around the nues G and K. The deflectors J J are similarly connected by openings J2 with the steam and water compartment C, so that water circulates in said water-jacketed deflectors and prevents the same from rapid destruction bythe heat and gases pass-4 ing through the auxiliary combustion-chamber I. In. the bottom ofthe latter is arranged an air-inlet I', extending through the steam and water compartment C and the shell A to the outside, and in this inlet I is preferably arranged a valve under the control of the engineer to admit air to the chamber I, and thereby insure complete combustion therein of the smoke and gases passing through the same from the set of fines G to the set of fines K. The forward end B' of the internal shellB,containing the fire-box F,is preferably corrugated transversely, as is plainly illustrated in Fig. l, so as to give the desired rigidity to the lire-box and allow the same to readily expand and contract when the boiler is in use.

In the fire-box F is arranged a grate F', extending forwardly and downwardly, and below the grate is an ash-pit F2. Access is had to the lire-box and Iash-pit through a firingdoor F3 and an ash-pit door F4. An air-inlet P is also arranged in the bottom of the ashpit F2, near the rear end thereof, and this airinlet is similar to the air-inlet I' and is likewise under the control of the engineer to admit more or less air to the ash-pit and the burning fuel on the grate F', and thereby aid combustion. The bottom portion of the chamber II is filled in with tire-brick H2, so as to form a bridge-wall.

The forward end of the internal shell B terminates a distance from the forward end of the external shell A, and as the steam and water compartment C is closed at the end of the shell B by a suitable sheet C it is evident that a smoke-box N is formed in the front end of the shell A and leads to a smokestack O.

VVhen the fire-box is in use, the smoke and gases arising from the burning fuel on the grate F in the fire-box F pass through the lines G into the chamber I and are deflected therein in a downward direction by the water-jacketed deflector J and then rise in the chamber I over the water-jacketed deflector J to reach the lues K, and the smoke and gases while in the chamber-I are subjected to IOO an auxiliary combustion by the introduction of air through the inlet-opening I', so that complete combustion of the fuel takes place. As the water circulates in the Achambers H and L and around the chamber I and in the water-jacketed delectors J J', it is evident that a very quickgeneration of steam takes place Without loss of fuel, so that the greatest economy in the consumption of fuel is obtained with an extremely rapid genera-tion of steam.

Having thus fully described my invention, I claim as new and desire to secure by Letters Patentv -1. A steam-boiler comprising an external shell, an internal shell disposed longitudinally within said external shell, eccentrically thereto, and forming a Water and steam compartment which surrounds said internal shell, the last-named shell being divided into a primary combustion-chamber, an auxiliary cornbustion-chamber, and other chambers which are equipped with independent sets of smokeflues.

2. A steamboiler comprising an external shell, an internal shell disposed longitudinally and eccentrically therein, said shells forming a water and steam chamber which surrounds the inner shell, and said inner shell divided into a primary combustionchamber, an auxiliary combustion-chamber, and other Water-circulating chambers Which are cut off from communication with said combustion-chambers and are in communicationr with said surrounding chambers, and spaced sets of smoke-lines disposed in said Water-circulatingchambers and com municating with the auxiliary combustion-chamber.

3. A boiler, comprising an external shell,

an internal shell arranged eccentricall y therein and forming therewith an intermediate steam and Water chamber, said internal'shell containing a fire-box, a plurality of spaced sets of smoke-lines, and an auxiliary combustion-chamber between the spaced sets of ues, as set forth.

4E. A boiler, comprising an external shell, an internal shell arranged eccentrically therein and forming with the latter a steam and water compartment, the latter as well as the forward end of said internal shell terminating a distance from the front end of the external shell to form a smoke-box, said shell containing a fire-box, a plurality of spaced tlues, and an auxiliary combustion-chamber between the sets of spaced iiues, as set forth.

5. A steam-boiler, comprising a primary combustion-chamber, water-chambers spaced relatively to one another, an auxiliary combustion-chamber disposed between said Water-chambers, a steam and water chamber surrounding the said combustion and water chambers and having circulating communcation with the Water-chambers, spaced sets of smoke-fines disposed within the water-chambers and commu nicating with one or both combustion-chambers, and jacketed deflectors in communication with the water and steam chamber and extending into the auxiliary combustion-chamber.

In testimony whereof I havev signed my name to this specification in the presence of two subscribing Witnesses.

JOHN J. REGAN.

Witnesses:

JOHN MCCAFFERY, CLARENCE W. FINKLE. 

